Lock actuated electrical switch



Sept. 29, 1931. M. w. FASSMANN LOCK ACTUATED ELECTRICAL SWITSH Filed Jan.. 4, 1929 2 Sheets-Sheet l Sept 29, 1931. M. w. FASSMANN 1,825,448

LOCK AGTUATED ELECTRICAL SWITCH Filed Jan. 4, 1929 2 Sheets-Sheet 2 Qbtowmp.

Patented Sept. 29, 1931 UNITED STATES MARSHALL WHARTON FASSMANN, F MONROE, LOUISIANA LOCK ACTUATED ELECTRICAL SWITCH Application filed January 4, 1929. Serial No. 330,355.

This invention relates to an electrical switch especially designed for use in connection with door or closure locks, the primary object of the invention being to provide a novel form of switch moved to its inactive position by the action of the sliding bolt of a lock passing into its keeper so that when the door or closure is locked the electrical circuit to the lamps or outlet boxes of a room or building will be broken.

Another object of the invention is to provide a switch including a pivoted blade and an actuating rod connected with the blade, the actuating rod extending into the keeper of the look so that the sliding bolt of the lock will move the actuating rod to operate the switch to break the circuit, and a coiled spring for automatically returning the switch to its inactive position when the sliding bolt moves from the keeper.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the in vention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings:

Figure 1 is a fragmental elevational view illustrating a switch constructed in accordance with the invention as positioned in a door frame, a portion of the switch housing being broken away.

Figure 2 is a sectional view taken on line 2-2 of Figure 1.

Figure 3 is a vertical sectional view through the switch.

Figure 4 is a sectional view taken on hne 4-4 of Figure 3.

Figure 5 is a rear elevational view of the switch.

Referring to the drawings in detail, the device includes a switch housing indicated generally by the reference character 5 and in which the wires of the electric circuit of 50 a room extend, the wires being indicated by the reference characters 6 and 7 respectively.

The wires 6 and 7 extend into the switch casing 8, the wire 6 being connected with the post 9 while the wire 7 connects with the post 10- which posts provide supports for the contact plates 11 that extend laterally therefrom. Cooperating with these contact plates 11 is a movable switch blade 12 that has oppositely curved end portions 13 adapted to engage the contact plates 11 to complete a circuit through the blade and wires so that electric energy may pass to the lamps or outlet sockets of the room or building with which the device is employed.

The blade 13 is pivotally supported by means of the arm 14 that has pivotal connection with the blade, through the medium of the bolt 15, the arm being insulated from the switch housing 8, by means of the strip of insulating material 16 to which the arm 14 and posts 9 and 10 are secured. The strip of insulating material being secured within the casing by means of the screws 17.

It is of course understood that the switch housing is positioned adjacent to the keeper of a look so that the switch supported within the switch housing may be actuated by the sliding bolt of the lock. Pivotally connected with the blade 13 is a link 18 formed of insulating material to which the actuating rod 19 is pivotally connected, the free end of the rod 19 extending into the keeper of the lock where it lies in the path of travel of the sliding bolt of the look so that as the sliding bolt is moved into the keeper to lock the door to which the lock, of which the sliding bolt forms a part, is secured, the switch blade 13 will be operated and moved out of engagement with the plates 11 to break the circuit.

Surrounding the actuating rod 19 is a coiled spring 20 that has one of its ends bearing against the switch casing 8, the opposite end thereof contacting with the washer 21 held on the rod 19, by means of the pin 22 extending therethrough.

From the foregoing it will be obvious that when devices of this type are used in connection with the lighting circuits of hotel rooms, it will be impossible for a person to lock the door of the room Without breaking the circuit to the electric lamps of the room, thereby insuring against persons leaving the room and leaving the lamps burning.

I claim:

In a switch, a body portion, binding posts extending into the body portion, contact plates extending laterally from the binding posts, a switch blade pivotally mounted intermediate its ends, a link pivotally connected with the blade at a point in spaced relation with the pivot point of the blade, a spring pressed actuating rod extending through the body portion, a link connecting the actuating rod and switch blade to transmit movement of the rod to the blade, and yieldable means for normally urging the rod in one direction to complete a circuit between the blade and binding posts.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature.

MARSHALL WHARTON FASSMANN. 

